Feed-water heater



(No Model.)

EEEE WATEE EEETEE. No. 306,358. Patented Oct. 7, 1884..

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FRANK SNEDEKER, HAMILTON POE, AND OLIVER G. RICHEY, OF ST. LOUIS, MISSOURI.

FEEDMWATER H EATER.

SPECIFICATION forming part of Letters Patent No. 306,358, dated October '7, 1.884.

Application tiled April 5, 18S-1. (No mollet) To @ZZ whom t may concern.'

Be it known that we, FRANK SNEDEKER, HAMILTON Pon, and OLivnR G. Bici-Inv, all of the city of St. Louis, in the State of Uissouri, have invented a certain new and useful Improvement in Feed- `.Vater Heaters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speci- Io iication.

This invention applies to a spray attachnient for boiler-feeders, and relates especially to the described devices by which the closing force upon the check-valve can be adjusted according to circumstances, the position of the valve seen from outside the boiler, the valve opened and closed from the outside, and a feed device by which acid or other inat-erial may be fed to prevent corrosion or to 2o dislodge corroded niatter from the parts. The

invention also embraces a deiiector that prevents the spray coniing in contact with the boiler-shell and forming the spray.

Figure l is an axial section of the device.

Fig. 2 is a bottom view of perforate plate through which the spray-water descends. Fig. 3 is a transverse section at 3 3, Fig. l. Fig. 4. shows a modification, (in elevation.)

A is part of the boiler-shell.

3o l is the valve' case or body, having a seat, C, for a ila-t valve at the lower end, anda stuiting-box, D, at the upper end.

E is the gland of the stuffing-box.

F is the feed-water pipe leading` from the doctor7 or injector and entering the side of the case B.

G is a flat valve closing upwardly (with the pressure oi" the steam) against the valve-seat C.

G is a soft-metal facing tothe valve G. IVe do 4o not,however, confine ourselves to this construction of valve as ia as relates to the facing if. rIhe valvestein II is connected at the upper end to a weighted lever, I, fulcru ined on a post, J, that we prefer to hinge at J to the bracketarm Ii, thus allowing slight vibration to the post to avoid the erainping of the valve-stein in the stuffing-box.

L is a weight suspended from the free end ot' the lever I, its suspending-bail resting in 5o any one or" the notches in the upper edge of the lever, according to the amount of liftingi'orce it is desired to apply to the valve. The' valve-stein passes through the guide M within the case B, and also works in a guide socket or box, N, beneath the case. The part of the stem working in the guide M is made prisinatic, or is so t'orined that only narrow edges 7L bear therein. lIhe purpose of this construction is to give sinall lines of bearing to prevent the stem sticking in the guide by corro- 6o sion, the friction of the edges against the sides of the circular guide-hole oi" guide ltI keeping the parts clean.

O is the detlcctor or breaker, made in form of an inverted bowl, with a central aperture occupied by the lower part of the case B, as shown. The niouth of the bowl is closed by a strainer, l?, at whose center is the guidesocket N. The breaker O has lugs 0 at opposite sides, and the strainer has lugs Il rest- 7o ing between the lugs O. Q, is a pintle-pin passing through the lugs O andly, thus forming a hinge at each side,

so that when either one of the pins Q is drawn out ot the lugs the strainer will `fall open on the hinge at the opposite side.

It is a-funnel to receive any liquid that it is desired to feed into the case 1B, the funnel ending in a feed-pipe, R', that enters the side of the case. Se

Between the funnel and pipe R is a valve,

S, by which the lower end ot' the funnel may be closed, and by which it is closed whenever the spray apparatus is in operation.

Any lubricant may be fed through the funnel R, or an acid to loosen any scale of corrosion on the metal, and in general any liquid may be fed into the boiler by this means to prevent corrosion or loosen scales.

In Fig. 4 a spring, Il, is shown in place of 9o the lever and weight I L, the spring being shown of elliptical forni, with lower leaf bearing upon the stufting-box, and the upper leaf bearing against the under side oi' a nut, T, screwing upon the valve-stein. 9

T' is a jam-nut screwing on the valve-stem to bind. Afast the nut T. rIhe pressure of the feed-water will open the valve G, and the water will be thrown out in a thin liorizonta'l sheet or spray, that will come in contact with roo the breaker O and beconie finely divided intol small drops, that will Fall upon the strainer e i j 306,358

and percolate through the perforations of the strainer. It will be seen that whether more or less water is -fed it will be spread out in a thin sheet by pressure between the valve and its seat. It will be also seen that in case of two or more boilers, each of which is vsupplied with one of our apparatuses, the amount of feed-water entering the different boilers may bcequalized, although the pressure of the feed-water may vary. For instance, ordinarily the pressure at the boiler nearest to the doctor would be greater than at the boiler at a greater distance from the doctor or injector; consequently at the boilers more distant from the doctor the weight L would be placed nearer the fulcrum of the lever l, or the nuts T T would be screwed upward on the stem to lessen tlielifting-force on the valve G.

The purpose of the breaker or deiiector O is twofold: first, to break up the water into a fine' spray; second, to prevent the impingement of the cool water against the shell of the boiler,

thus avoiding rapid changes of temperature in the metal, such changes causing crystallization of the iron and consequent weakening` of the boiler-sheet.

As the valve-stem H extends up into plain sight it can be seen by its position whether the doctor or injector is Working by indicating whether or not the valve is open. As the stem is in sight, and especially in the form shown in Fig. l, it can be moved by hand to water is stopped and the valve G closed. Then the valve S is opened to establish communication between the funnel and the interior ofthe case B. Then if the liquid in the funnel has greater specific gravity than water `it takes the place of so much water in the case. W'here the material in the funnel is lighter than water, it would be necessary to make way for it by exhausting the water in more or less degree from the case. This is readily done by stopping the doctor and opening` the valve G, so that steam would take the place of water in the case B.'

To claiml. The combination of case B withvalve G, seated at the inner end thereof, the feed-wa, ter pipe F, and valve-stem having a portion with edges or ribs 7i working in a round guide, M, substantially as set forth, and connected to lever I outside the case.

2. The combination of case B, having flat bottom O, valve G, made flat and seated on the ilat bottom of the case B, and breaker or deflector O, constructed to receive the impingement of the sheet of water thrown out between the valve and its seat.

3. The combination of caso B, valve G, breaker O, and strainer Pwith a feed-water pipe, F, substantially as set forth.

4. The combination of case B, valve G, and breaker O with a feed-water pipe, F, substantially as set forth.

FRANK SNEDEKER. HAMILTON POE. OLIVER G. RIGHEY. Vitnesses:

FRANK OBEAR, WILLIAM H. CHEETHAM. 

